... flange-bolt failure 凸缘螺栓损坏 flange mounting bolt 凸缘安装螺栓 upper flange connecting bolt 上法兰连接螺栓 ...
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Under certain pre - tension from flange joint bolt, leakage of flange sealing had an obvious decrease, thus resolving sealing failure in cover flange of heat exchange.
在一定法兰连接螺栓预紧力作用下，法兰密封泄漏明显减少，从而解决了热交换器封头法兰密封失效的问题。
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